Add a manpage

.gitignore

@@ -1,2 +1,3 @@
 a.out
 no_new_privs
+no_new_privs.1

Makefile

@@ -1,13 +1,17 @@
 CFLAGS = -Wall -Wextra
 PREFIX = /usr/local
-installables := bin/no_new_privs
+export RONN_ORGANIZATION = Nicolas Braud-Santoni
+
+installables := bin/no_new_privs man/man1/no_new_privs.1
 
 .PHONY: clean default install uninstall
 default: $(notdir $(installables))
 
 no_new_privs: main.c
 	$(CC) --std=c99 -o $@ $^ $(CFLAGS) $(LDFLAGS)
 
+%.1: %.1.md
+	ronn --roff $^
 
 clean:
 	rm -f $(notdir $(installables))

no_new_privs.1.md

@@ -0,0 +1,33 @@
+no_new_privs(1) -- set the `NO_NEW_PRIVS` `prctl`(2)
+====================================================
+
+SYNOPSIS
+--------
+
+`no_new_privs` <program> [<arguments> ...]
+
+
+DESCRIPTION
+-----------
+
+`no_new_privs` executes a program, with given arguments,
+after setting the `NO_NEW_PRIVS` `prctl`(2) option.
+
+If <program> doesn't contain a slash (/), it is searched for in a
+shell-like fashion, in the `PATH` environment variable; see `execvp`(3).
+
+EXIT STATUS
+-----------
+
+When ran successfuly, `no_new_privs` is replaced (using `execvp`(3))
+by the desired program, and thus that program's exit status is used.
+
+When ran unsuccessfuly, `no_new_privs` returns `EXIT_FAILURE`.
+
+
+SEE ALSO
+--------
+
+`prctl`(2)
+
+https://www.kernel.org/doc/Documentation/prctl/no_new_privs.txt